ClassID:

205023

H01J29/481 - CPC Classification

Classification description:

Details of cathode-ray tubes or of electron-beam tubes of the types covered by group; Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement; Electron guns Electron guns using field-emission, photo-emission, or secondary-emission electron source

Recent Application in this class:
#1
20260038761
2026-02-05

SUPERCONDUCTING CRYO MODULE

#2
20240145204
2024-05-02

Electron emission methods to generate electron beams with a narrow energy distribution

#3
20230036712
2023-02-02

Power supply circuit and field emission electron source

#4
20220157551
2022-05-19

Electron source and electron source unit

#5
20210305002
2021-09-30

Field emission device

#6
20200332780
2020-10-22

Thruster device

#7
20200321182
2020-10-08

Regulated charged particle beam emitter systems and methods

#8
20180019091
2018-01-18

Emitter, electron gun using emitter, electronic apparatus using electron gun, and method of producing emitter

#9
20170365438
2017-12-21

Compact modular cathode

#10
20170263410
2017-09-14

Charged particles accelerator apparatus, charged particle gun and method of accelerating charged particles

#11
20170250049
2017-08-31

Image intensifier sensor as well as an imaging device comprising such an image intensifier sensor

#12
20170243712
2017-08-24

Electron emission device and transistor provided with the same

#13
20160148776
2016-05-26

Field emission device with ground electrode

#14
20160104597
2016-04-14

Electron gun, charged particle gun, and charged particle beam apparatus using electron gun and charged particle gun

#15
20160013009
2016-01-14

Variable field emission device

#16
20150187533
2015-07-02

Cathode arrangement, electron gun, and lithography system comprising such electron gun

#17
20150179389
2015-06-25

Performance optimization of a field emission device

#18
20140333213
2014-11-13

Field emission device with AC output

#19
20140232994
2014-08-21

Low power laser CRT and projection system based on parallel flow electron gun

#20
20140070696
2014-03-13

Time-varying field emission device

#21
20130336459
2013-12-19

Field emission X-ray tube and method of focusing electron beam using the same

#22
20130241434
2013-09-19

Dielectric-free triode field emission display device based on double-gate/single-cathode type electron emission units and the device drive methods

#23
20130229105
2013-09-05

Variable field emission device

#24
20130187541
2013-07-25

Photocathode high-frequency electron-gun cavity apparatus

#25
20130169193
2013-07-04

Performance optimization of a field emission device

#26
20130169156
2013-07-04

Field emission device

#27
20130169108
2013-07-04

Anode with suppressor grid

#28
20130168635
2013-07-04

Materials and configurations of a field emission device

#29
20120235113
2012-09-20

Electron emission element and imaging device having the same

#30
20110285271
2011-11-24

Field emission device having secondary electron enhancing electrode

#31
20110057555
2011-03-10

Matrix-type cold-cathode electron source device

#32
20110001421
2011-01-06

Matrix-type cold-cathode electron source device

#33
20100301354
2010-12-02

LIGHT EMISSION DEVICE AND DISPLAY DEVICE USING THE SAME

#34
20100254886
2010-10-07

Carbon nanotube particulates, compositions and use thereof

#35
20100026165
2010-02-04

Carbon nanotube emitter and its fabrication method and field emission device (FED) using the carbon nanotube emitter and its fabrication method

#36
20100019647
2010-01-28

Field emission cathode device and field emission display using the same

#37
20100013365
2010-01-21

CATHODE STRUCTURE FOR FLAT-PANEL DISPLAY WITH REFOCUSING GATE

#38
20100007263
2010-01-14

Field emission cathode and field emission display employing with same

#39
20090325452
2009-12-31

CATHODE SUBSTRATE HAVING CATHODE ELECTRODE LAYER, INSULATOR LAYER, AND GATE ELECTRODE LAYER FORMED THEREON

#40
20090295271
2009-12-03

Field Emission Display Having Multi-Layer Structure

#41
20090140629
2009-06-04

Cathode planes for field emission devices

#42
20090098790
2009-04-16

Field emission display (FED) and method of manufacture thereof

#43
20090053962
2009-02-26

Field emission display (FED) and method of manufacture thereof

#44
20090021136
2009-01-22

Emitting device having electron emitting nanostructures and method of operation

#45
20080297025
2008-12-04

Plane emissive cathode structure of field emission display

#46
20080291366
2008-11-27

Electron emitter apparatus, a fabrication process for the same and a device utilising the same

#47
20080284307
2008-11-20

METHOD FOR DRIVING CATHADE OF FIELD EMISSION DISPLAY AND STRUCTURE OF THE SAME

#48
20080203886
2008-08-28

Field emission devices using modified carbon nanotubes

#49
20080160867
2008-07-03

Field emission display and manufacturing method thereof

#50
20080157647
2008-07-03

Field emission display device

#51
20080122336
2008-05-29

Electron-emitting device, electron source using the same, image display apparatus, and information displaying and reproducing apparatus

#52
20080116782
2008-05-22

LIGHT EMISSION DEVICE AND DISPLAY DEVICE

#53
20080048551
2008-02-28

Image display device

#54
20080045112
2008-02-21

Method for manufacturing an electron-emitting device with first and second carbon films

#55
20080018228
2008-01-24

Electronic emission device, electron emission display device having the same, and method of manufacturing the electron emission device

#56
20080018225
2008-01-24

Electron emission device and electron emission display using the same

#57
20070284997
2007-12-13

Electron emission display

#58
20070284987
2007-12-13

Field emission element and manufacturing method thereof

#59
20070284986
2007-12-13

Carbon nanotube array element and method for producing the same

#60
20070273264
2007-11-29

Method of preparing patterned carbon nanotube array and patterned carbon nanotube array prepared thereby

#61
20070267961
2007-11-22

Light emission device and display device

#62
20070252508
2007-11-01

Composition for forming electron emitter, electron emitter formed using the composition, electron emission device having the emitter, and backlight unit having the emitter

#63
20070249255
2007-10-25

Method for manufacturing an electron-emitting device with first and second carbon films

#64
20070224429
2007-09-27

Dielectric and display device having a dielectric and dielectric manufacturing method

#65
20070222393
2007-09-27

ELECTRON EMITTING DEVICE

#66
20070205710
2007-09-06

Cold cathode type flat panel display

#67
20070194689
2007-08-23

Electron emission device and electron emission display using the same

#68
20070188067
2007-08-16

Structure, electron emitting device, secondary battery, electron source, and image display device

#69
20070170414
2007-07-26

Field emission devices using carbon nanotubes modified by energy, plasma, chemical or mechanical treatment

#70
20070135012
2007-06-14

Method of fabricating an electron-emitting device incorporating a conductive film containing first and second particles having different resistance values

#71
20070123134
2007-05-31

Method for preventing electron emission from defects in a field emission device

#72
20070103052
2007-05-10

Field emission display device

#73
20070096628
2007-05-03

Electron emission display

#74
20070096627
2007-05-03

Electron emission device and electron emission display device using the same

#75
20070096626
2007-05-03

Electron emission display having electron beams with reduced distortion

#76
20070096624
2007-05-03

Electron emission device

#77
20070096621
2007-05-03

Electron emission display

#78
20070090746
2007-04-26

Electron emission device and electron emission display using the same

#79
20070090745
2007-04-26

Electron emission display

#80
20070080626
2007-04-12

Light emitting device using electron emission and flat display apparatus using the same

#81
20070063629
2007-03-22

Field emitters and devices

#82
20070046173
2007-03-01

Electron source and image display apparatus

#83
20070035232
2007-02-15

Electron emission display device

#84
20070035229
2007-02-15

Light emitting display device

#85
20070029924
2007-02-08

Image display device

#86
20070029919
2007-02-08

Electron emission device having a focus electrode and a fabrication method therefor

#87
20070024178
2007-02-01

Field emission device having insulated column lines and method of manufacture

#88
20070018565
2007-01-25

Electron emission device, electron emission type backlight unit and flat display apparatus having the same

#89
20070018553
2007-01-25

Electron emission device, electron emission type backlight unit and flat display apparatus having the same

#90
20070007872
2007-01-11

Field emission device (FED) having ring-shaped emitter and its method of manufacture

#91
20070007615
2007-01-11

Devices containing multiple undercut profiles

#92
20070007238
2007-01-11

Simplified etching technique for producing multiple undercut profiles

#93
20070001575
2007-01-04

Electron emission device and electron emission display using the electron emission device

#94
20060290288
2006-12-28

Field emission display and manufacturing method thereof

#95
20060290260
2006-12-28

Field emission display having carbon nanotube emitter and method of manufacturing the same

#96
20060290259
2006-12-28

Field emission device and field emission display device using the same

#97
20060284540
2006-12-21

Image display device

#98
20060267482
2006-11-30

Field emission device

#99
20060267478
2006-11-30

Field emission device (FED)

#100
20060267476
2006-11-30

Electron emission device

#101
20060255344
2006-11-16

Field emission device, display adopting the same and method of manufacturing the same

#102
20060238108
2006-10-26

Electron emission device with multilayered insulating layers

#103
20060232190
2006-10-19

Electron emission device and method for manufacturing the same

#104
20060220584
2006-10-05

Electron emission device

#105
20060220527
2006-10-05

Electron emission device, electron emission display device using the same and method of manufacturing the same

#106
20060220526
2006-10-05

Electron emission device, electron emission display device using the same, and method for manufacturing the same

#107
20060220524
2006-10-05

Electron emission device

#108
20060220523
2006-10-05

Electron emission device and electron emission display device

#109
20060208629
2006-09-21

Display device

#110
20060202207
2006-09-14

Image display device

#111
20060192475
2006-08-31

Carbon nanotube emitter and its fabrication method and field emission device (FED) using the carbon nanotube emitter and its fabrication method

#112
20060189243
2006-08-24

Method for manufacturing an electric emitting device with first and second carbon films

#113
20060186787
2006-08-24

Cathode substrate for electron emission device and electron emission device with the same

#114
20060163995
2006-07-27

Gun with a cold cathode

#115
20060138936
2006-06-29

FED having polycrystalline silicon film emitters and method of fabricating polycrystalline silicon film emitters

#116
20060125730
2006-06-15

Cold cathode type flat panel display

#117
20060113889
2006-06-01

Electron emission device

#118
20060066217
2006-03-30

Cathode structure for field emission device

#119
20060065895
2006-03-30

Image display device

#120
20060049743
2006-03-09

Flat panel display

#121
20060043875
2006-03-02

Electron emission device and method of manufacturing the same

#122
20060028111
2006-02-09

Field emission device and field emission display using the same having a concave-shaped cathode to enhance electron focusing

#123
20060022577
2006-02-02

Electron emission device and method for manufacturing

#124
20060022575
2006-02-02

Electron emission device having openings with improved aspect ratio and method of manufacturing

#125
20060012279
2006-01-19

Dielectric electron emitter comprising a polycrystalline substance

#126
20050285504
2005-12-29

Apparatuses for providing uniform electron beams from field emission displays

#127
20050280351
2005-12-22

Field emission display (FED) and method of manufacture thereof

#128
20050275331
2005-12-15

Field emission devices using modified carbon nanotubes

#129
20050264171
2005-12-01

Electron emission device

#130
20050264170
2005-12-01

Field emission display (FED) and method of manufacture thereof

#131
20050264156
2005-12-01

Electron emission device including conductive layers for preventing accumulation of static charge

#132
20050258739
2005-11-24

Field emission device and field emission display using the same

#133
20050258729
2005-11-24

Field emission display (FED) and method of manufacture thereof

#134
20050253837
2005-11-17

Matrix display device

#135
20050248257
2005-11-10

Electron emission device and electron emission display using the same

#136
20050242706
2005-11-03

Cathode substrate for electron emission device, electron emission device, and method of manufacturing the same

#137
20050242704
2005-11-03

Electron emission device

#138
20050239364
2005-10-27

Method of fabricating tetra-polar field-emission display

#139
20050236962
2005-10-27

Negative hole structure having a protruded portion and electron emission device including the same

#140
20050231099
2005-10-20

Luminescence brightness compensation structure of field-emission display

#141
20050230750
2005-10-20

Cathode substrate and its manufacturing method

#142
20050218787
2005-10-06

Electron emission device and electron emission display including the same

#143
20050194887
2005-09-08

Field emission device and field emission display including dual cathode electrodes

#144
20050184649
2005-08-25

Electron emission device with electron emission region on cathode electrode with gate electrode arranged to focus electrons emitted from the electron emission region

#145
20050184647
2005-08-25

Electron emission device

#146
20050184646
2005-08-25

Electron emission device and method of manufacturing the same

#147
20050174028
2005-08-11

Field emission device and backlight device using the field emission device and method of manufacture thereof

#148
20050156533
2005-07-21

Cold cathode type flat panel display

#149
20050133779
2005-06-23

Field emission device, display adopting the same and method of manufacturing the same

#150
20050127821
2005-06-16

Field emission display in which a field emission device is applied to a flat display

#151
20050116600
2005-06-02

Field emission display having grid plate with multi-layered structure

#152
20050110393
2005-05-26

Design for a field emission display with cathode and focus electrodes on a same level

#153
20050104494
2005-05-19

Flat panel display and method of manufacturing the same

#154
20050095947
2005-05-05

Field emission display device and driving method thereof

#155
20050093426
2005-05-05

Field emission display with double layered cathode and method of manufacturing the same

#156
20050093424
2005-05-05

Field emission display device

#157
20050082964
2005-04-21

Cold cathode electric field electron emission display device

#158
20050067938
2005-03-31

Carbon nano-tube field emission display having strip shaped gate

#159
20050052117
2005-03-10

Field emission display device

#160
20050035701
2005-02-17

Field emission display having carbon nanotube emitter and method of manufacturing the same

#161
20050002851
2005-01-06

Carbon nanotube particulates, compositions and use thereof

#162
16171458
2020-12-01

Radial radio frequency (RF) electron guns

#163
15799796
2019-08-27

Tunable quantum confinement and quantum dot photocathode